Standard Test Method for dielectric breakdown voltage and dielectric strength of D149 ASTM solid electrical insulating materials at industrial power frequencies.
ASTM D149固体电绝缘材料在工业电源频率下的介电击穿电压和介电强度的试验方法。
Test method for ASTM D149 solid electrical insulating materials at commercial power frequencies the dielectric breakdown voltage and dielectric strength.
ASTM D149固体电绝缘材料在工业电源频率下的介电击穿电压和介电强度的试验方法。
The altitude revision factors influenced by pressure on pollution insulating strength of insulators were calculated under light pollution degree.
计算了绝缘子在轻污秽度下污秽绝缘强度受气压影响的海拔修正系数。
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